http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
public class org.bouncycastle.crypto.digests.SHA3Digest extends org.bouncycastle.crypto.digests.KeccakDigest
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.bouncycastle.crypto.digests.SHA3Digest
  super_class: org.bouncycastle.crypto.digests.KeccakDigest
{
  private static int checkBitLength(int);
    descriptor: (I)I
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // int bitLength
         0: .line 14
            iload 0 /* bitLength */
            lookupswitch { // 4
                  224: 1
                  256: 1
                  384: 1
                  512: 1
              default: 2
          }
         1: .line 20
      StackMap locals:
      StackMap stack:
            iload 0 /* bitLength */
            ireturn
         2: .line 22
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc "'bitLength' "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            iload 0 /* bitLength */
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            ldc " not supported for SHA-3"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
        end local 0 // int bitLength
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0  bitLength  I
    MethodParameters:
           Name  Flags
      bitLength  

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
         0: .line 28
            aload 0 /* this */
            sipush 256
            invokespecial org.bouncycastle.crypto.digests.SHA3Digest.<init>:(I)V
         1: .line 29
            return
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/bouncycastle/crypto/digests/SHA3Digest;

  public void <init>(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
        start local 1 // int bitLength
         0: .line 33
            aload 0 /* this */
            iload 1 /* bitLength */
            invokestatic org.bouncycastle.crypto.digests.SHA3Digest.checkBitLength:(I)I
            invokespecial org.bouncycastle.crypto.digests.KeccakDigest.<init>:(I)V
         1: .line 34
            return
        end local 1 // int bitLength
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0       this  Lorg/bouncycastle/crypto/digests/SHA3Digest;
            0    2     1  bitLength  I
    MethodParameters:
           Name  Flags
      bitLength  

  public void <init>(org.bouncycastle.crypto.digests.SHA3Digest);
    descriptor: (Lorg/bouncycastle/crypto/digests/SHA3Digest;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
        start local 1 // org.bouncycastle.crypto.digests.SHA3Digest source
         0: .line 37
            aload 0 /* this */
            aload 1 /* source */
            invokespecial org.bouncycastle.crypto.digests.KeccakDigest.<init>:(Lorg/bouncycastle/crypto/digests/KeccakDigest;)V
         1: .line 38
            return
        end local 1 // org.bouncycastle.crypto.digests.SHA3Digest source
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/crypto/digests/SHA3Digest;
            0    2     1  source  Lorg/bouncycastle/crypto/digests/SHA3Digest;
    MethodParameters:
        Name  Flags
      source  

  public java.lang.String getAlgorithmName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
         0: .line 42
            new java.lang.StringBuilder
            dup
            ldc "SHA3-"
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* this */
            getfield org.bouncycastle.crypto.digests.SHA3Digest.fixedOutputLength:I
            invokevirtual java.lang.StringBuilder.append:(I)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            areturn
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/crypto/digests/SHA3Digest;

  public int doFinal(byte[], int);
    descriptor: ([BI)I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
        start local 1 // byte[] out
        start local 2 // int outOff
         0: .line 47
            aload 0 /* this */
            iconst_2
            iconst_2
            invokevirtual org.bouncycastle.crypto.digests.SHA3Digest.absorbBits:(II)V
         1: .line 49
            aload 0 /* this */
            aload 1 /* out */
            iload 2 /* outOff */
            invokespecial org.bouncycastle.crypto.digests.KeccakDigest.doFinal:([BI)I
            ireturn
        end local 2 // int outOff
        end local 1 // byte[] out
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/bouncycastle/crypto/digests/SHA3Digest;
            0    2     1     out  [B
            0    2     2  outOff  I
    MethodParameters:
        Name  Flags
      out     
      outOff  

  protected int doFinal(byte[], int, byte, int);
    descriptor: ([BIBI)I
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=7, args_size=5
        start local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
        start local 1 // byte[] out
        start local 2 // int outOff
        start local 3 // byte partialByte
        start local 4 // int partialBits
         0: .line 57
            iload 4 /* partialBits */
            iflt 1
            iload 4 /* partialBits */
            bipush 7
            if_icmple 2
         1: .line 59
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "'partialBits' must be in the range [0,7]"
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 62
      StackMap locals:
      StackMap stack:
            iload 3 /* partialByte */
            iconst_1
            iload 4 /* partialBits */
            ishl
            iconst_1
            isub
            iand
            iconst_2
            iload 4 /* partialBits */
            ishl
            ior
            istore 5 /* finalInput */
        start local 5 // int finalInput
         3: .line 63
            iload 4 /* partialBits */
            iconst_2
            iadd
            istore 6 /* finalBits */
        start local 6 // int finalBits
         4: .line 65
            iload 6 /* finalBits */
            bipush 8
            if_icmplt 8
         5: .line 67
            aload 0 /* this */
            iconst_1
            newarray 8
            dup
            iconst_0
            iload 5 /* finalInput */
            i2b
            bastore
            iconst_0
            iconst_1
            invokevirtual org.bouncycastle.crypto.digests.SHA3Digest.absorb:([BII)V
         6: .line 68
            iinc 6 /* finalBits */ -8
         7: .line 69
            iload 5 /* finalInput */
            bipush 8
            iushr
            istore 5 /* finalInput */
         8: .line 72
      StackMap locals: int int
      StackMap stack:
            aload 0 /* this */
            aload 1 /* out */
            iload 2 /* outOff */
            iload 5 /* finalInput */
            i2b
            iload 6 /* finalBits */
            invokespecial org.bouncycastle.crypto.digests.KeccakDigest.doFinal:([BIBI)I
            ireturn
        end local 6 // int finalBits
        end local 5 // int finalInput
        end local 4 // int partialBits
        end local 3 // byte partialByte
        end local 2 // int outOff
        end local 1 // byte[] out
        end local 0 // org.bouncycastle.crypto.digests.SHA3Digest this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    9     0         this  Lorg/bouncycastle/crypto/digests/SHA3Digest;
            0    9     1          out  [B
            0    9     2       outOff  I
            0    9     3  partialByte  B
            0    9     4  partialBits  I
            3    9     5   finalInput  I
            4    9     6    finalBits  I
    MethodParameters:
             Name  Flags
      out          
      outOff       
      partialByte  
      partialBits  
}
SourceFile: "SHA3Digest.java"